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Fabrication of Electrospun PVDF Nanofibers with Higher Content of Polar β Phase and Smaller Diameter by Adding a Small Amount of Dioctadecyl Dimethyl Ammonium Chloride

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Chinese Journal of Polymer Science 2017年第8期35卷 992-1000页

作者： wei xue cong lv yao jing 陈枫傅强 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China

In this work,the effect of dioctadecyl dimethyl ammonium chloride（DDAC,a kind of alkyl ammonium salt） on polar β phase content and the diameter of electrospun PVDF nanofibers was investigated for the first *** experimental results show that the diameter of the electrospun PVDF nanofiber could be largely reduced and the content of polar β phase also become dominant immediately by just adding a little amount of *** the mass fraction of DDAC reached 4%,the content of polar β phase increased by about 39.1% compared with PVDF nanofibers without ***,the crystallinity of PVDF nanofibers also increased with the addition of *** on the results,the possible mechanism of cooperative effect between electrospinning and DDAC on fiber diameter and formation of β phase in PVDF was discussed.

关键词： Diameter crystalline crystallinity polar cooperative adding Polar ammonium alkyl attributed

On the General and Resonant Solutions of Atoms Reflected by an Evanescent Laser Wave

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Chinese Physics Letters 1996年第8期13卷 587-589页

作者： TAN wei-han LI qiang-ning Department of Physics Shanghai UniversityShanghai 200072 and Shanghai Institute of Optics and fine Mechanics Chinese Academy of SciencesShanghai 201800

Usually the reflection of two level atoms by a detuning evanescent laser wave was studied in past few years.1-3 In previous paper we have presented an exact solution for this model based on the matrix Laplace transformation technique,and proceeded the numerical calculations for a given set of parameters.4 However in the special case of resonance interaction considered in this paper,the solution for Schrödinger wave equation and reflectivity calculation can be greatly simplified;besides,the resonant solution provides a check to the numerical data based on the general solution of the previous paper.

关键词： parameters wave simplified

Integrative molecular characterization of Chinese prostate cancer specimens

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Asian Journal of Andrology 2020年第2期22卷 162-168页

作者： Shi-Dong lv Hong-Yi Wang Xin-Pei Yu Qi-Liang Zhai Yao-Bin Wu qiang wei Wen-Hua Huang National Key Discipline of Human Anatomy School of Basic Medical SciencesSouthern Medical UniversityGuangzhou 510515China Guangdong Engineering Research Center for Translation of Medical 3D Printing Application Guangzhou 510515China Department of Urology Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China Department of Oncology Affiliated Cancer Hospital and Institute of Guangzhou Medical UniversityGuangzhou 510095China

Prostate cancer(PCa)exhibits epidemiological and molecular *** extensive studies of its phenotypic and genetic properties in Western populations,its molecular basis is not clear in Chinese *** determine critical molecular characteristics and explore correlations between genomic markers and clinical parameters in Chinese populations,we applied an integrative genetic/transcriptomic assay that combines targeted next-generation sequencing and quantitative real-time PCR(qRT-PCR)on samples from 46 Chinese patients with ***(K)-specific methyltransferase 2D(KMT2D),zinc finger homeobox 3(ZFHX3),A-kinase anchoring protein 9(AKAP9),and GLI family zinc finger 1(GLI1)were frequently mutated in our ***,a clinicopathological analysis showed that RB transcriptional corepressor 1(RB1)deletion was common in patients with a high risk of disease ***,four genomic events,MYC proto-oncogene(MYC)amplification,RB1 deletion,APC regulator of WNT signaling pathway(APC)mutation or deletion,and cyclin-dependent kinase 12(CDK12)mutation,were correlated with poor disease-free *** addition,a close link between KMT2D expression and the androgen receptor(AR)signaling pathway was observed both in our cohort and in The Cancer Genome Atlas Prostate Adenocarcinoma(TCGA-PRAD)*** summary,our results demonstrate the feasibility and benefits of integrative molecular characterization of PCa samples in disease pathology research and personalized medicine.

关键词： androgen receptor molecular subtyping next generation sequencing prostate cancer quantitative real-time-polymerase chain reaction

Composite filtering with feedback information

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Journal of Systems Engineering and Electronics 2007年第1期18卷 54-56页

作者： He You Xiong wei Ma qiang Dept. of Electronic Engineering Naval Aeronautical Engineering Inst. Yantai 264001 P. R. China

The optimal fusion solution with feedback information for a hybrid multisensor data fusion system is presented. In this system, a part of sensors process their data locally to produce local tracks, and another part of sensors only provide detection reports These tracks and detection reports are communicated to a central site where track fusion and composite filtering are performed. The comparative results on the simulations suggest the feedback information from the center can greatly improve the tracking performance of the local node.

关键词： Data fusion Hybrid system Multisensor tracking Filtering

A Fast Calculation of Metric Scores for Learning Bayesian Network

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International Journal of Automation and computing 2012年第1期9卷 37-44页

作者： qiang lv Xiao-Yan Xia Pei-De Qian School of Computer Science and Technology Soochow University Suzhou 215006 PRC Jiangsu Provincial Key Lab for Computer Information Processing Technology Suzhou 215006 PRC

Frequent counting is a very so often required operation in machine learning algorithms. A typical machine learning task, learning the structure of Bayesian network （BN） based on metric scoring, is introduced as an example that heavily relies on frequent counting. A fast calculation method for frequent counting enhanced with two cache layers is then presented for learning BN. The main contribution of our approach is to eliminate comparison operations for frequent counting by introducing a multi-radix number system calculation. Both mathematical analysis and empirical comparison between our method and state-of-the-art solution are conducted. The results show that our method is dominantly superior to state-of-the-art solution in solving the problem of learning BN.

关键词： Frequent counting radix-based calculation ADtree learning Bayesian network metric score

Sediment distribution pattern mapped from the combination of objective analysis and geostatistics in the large shallow Taihu Lake, China

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Journal of Environmental Sciences 2004年第6期16卷 908-911页

作者： LUOLian-cong QINBo-qiang ZHUGuang-wei NanjingInstituteofGeography＆Limnology ChineseAcademyofSciencesNanjing210008China

Investigation was made into sediment depth at 723 irregularly scattered measurement points which cover all the regions in Taihu Lake, China. The combination of successive correction scheme and geostatistical method was used to get all the values of recent sediment thickness at the 69×69 grids in the whole lake. The results showed that there is the significant difference in sediment depth between the eastern area and the western region, and most of the sediments are located in the western shore-line and northern regimes but just a little in the center and eastern parts. The notable exception is the patch between the center and Xishan Island where the maximum sediment depth is more than 4.0 m. This sediment distribution pattern is more than likely related to the current circulation pattern induced by the prevailing wind-forcing in Taihu Lake. The numerical simulation of hydrodynamics can strong support the conclusion. Sediment effects on water quality was also studied and the results showed that the concentrations of TP, TN and SS in the western part are obviously larger than those in the eastern regime, which suggested that more nutrients can be released from thicker sediment areas.

关键词： objective analysis geostatistics sediment distribution Taihu Lake

In-situ SEM characterization of fracture mechanism of TiB/Ti-2Al-6Sn titanium matrix composites after electroshocking treatment

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Rare Metals 2024年第6期43卷 2805-2818页

作者： Ya-Ya Wu Jian Zhou Guo-Lei Han Yan Wen Zhou Wang Li-qiang Wang wei-Jie lv Le-Chun Xie Lin Hua Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan 430070China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this article,in-situ scanning electron microscope characterization of the tensile properties of TiB/Ti-2Al-6Sn titanium matrix composite(TMC)was conducted before and after electroshocking treatment(EST).After EST,the tensile strength increased by 113.2 *** effect of EST on the tensile strength and fracture behavior of TiB was investigated using in-situ characterization of the fracture morphology and crack propagation path of the matrix and *** EST,TiB fracture introduced cracks that extended into the matrix,resulting in material *** EST,the refined TiB improved the bearing capacity of the matrix,thereby improving TMC ***,after EST,the cracks were introduced into the matrix,and resulting the fracture of matrix *** an increase in the external load,cracks in the matrix were observed to propagate to TiB,and the refined TiB was fractured,detached,and pulled out,resulting in the formation of *** the propagation path of the main crack after EST showed that the deflection angle of the main crack *** micro structure of the fracture surface indicated that the fracture of the matrix was plastic,whereas that of TiB was *** EST,the size and area of the dimples increased,confirming the increase in *** results revealed that the comprehensive mechanical properties of TiB/Ti-2Al-6Sn improved after ***,EST is an efficient method for tailoring the micro structures and mechanical properties of TMCs.

关键词： TiB/Ti-2Al-6Sn In-situ microstructure characterization Tensile properties Reinforcement Electroshocking treatment(EST)

Interfacial intermetallic compound growth and shear strength of low-silver SnAgCuBiNi/Cu lead-free solder joints

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International Journal of Minerals,Metallurgy and Materials 2013年第9期20卷 883-889页

作者： Guo-qiang wei Lei Wang Xin-qiang Peng Ming-yang Xue School of Mechanical and Automotive Engineering South China University of Technology

The growth rule of the interfacial intermetallic compound （IMC） and the degradation of shear strength of ***-0.5Cu-2.0Bi-0.05Ni （SACBN）/Cu solder joints were investigated in comparison with Sn-3.0Ag-0.5Cu （SAC305）/ Cu solder joints aging at 373, 403, and 438 K. The results show that （Cul-x,Nix）6Sn5 phase forms between the SACBN solder and Cu substrate during soldering. The interracial IMC thickens constantly with the aging time increasing, and the higher the aging temperature, the faster the IMC layer grows. Compared with the SAC305/Cu couple, the SACBN/Cu couple exhibits a lower layer growth coefficient. The activation energies of IMC growth for SACBN/Cu and SAC305/Cu couples are 111.70 and 82.35 kJ/mol, respectively. In general, the shear strength of aged solder joints declines continuously. However, SACBN/Cu solder joints exhibit a better shear strength than SAC305/Cu solder joints.

关键词： soldering alloys soldered joints aging intermetallics activation energy shear strength

Therapeutic efficacy of Pudilan Xiaoyan Oral Liquid(PDL)for COVID-19 in vitro and in vivo

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Signal Transduction and Targeted Therapy 2020年第1期5卷 1875-1877页

作者： wei Deng Yanfeng Xu Qi Kong Jing Xue Pin Yu Jiangning Liu Qi lv Fengdi Li qiang wei Linlin Bao NHC Key Laboratory of Human Disease Comparative Medicine Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious DiseasesInstitute of Laboratory Animal ScienceChinese Academy of Medical Sciences and Comparative Medicine CenterPeking Union Medical CollegeBeijingChina

Dear Editor,Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2),has rapidly swept through the worldwide,with more than 3 million confirmed *** now,no vaccine or effective therapeutic measures are provided to prevent the SARS-CoV-2 *** medicines have some strong advantages on pharmacokinetics,known side effects,safety and dosing regimens.1 Although remdesivir and chloroquine could effectively inhibit the replication of SARS-CoV-2 in vitro,2 no medicine candidates have been evaluated in vivo by using animal models with SARS-CoV-2 infection.

关键词： vivo fir COV